linux-kernel - Re: [PATCH] media: ov7251: add missing clk_disable_unprepare() on error in ov7251_set_power

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Date:   Fri, 17 Jun 2022 23:02:54 +0100
From:   Daniel Scally <djrscally@...il.com>
To:     Yang Yingliang <yangyingliang@...wei.com>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Cc:     mchehab@...nel.org, andriy.shevchenko@...ux.intel.com,
        sakari.ailus@...ux.intel.com
Subject: Re: [PATCH] media: ov7251: add missing clk_disable_unprepare() on
 error in ov7251_set_power_on()

Hello

On 17/06/2022 02:39, Yang Yingliang wrote:
> Add the missing clk_disable_unprepare() before return
> from ov7251_set_power_on() in the error handling case.
>
> Fixes: 9e1d3012cc10 ("media: i2c: Remove .s_power() from ov7251")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>


Thanks for spotting this - with Andy's comment addressed:


Reviewed-by: Daniel Scally <djrscally@...il.com>

> ---
>  drivers/media/i2c/ov7251.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/i2c/ov7251.c b/drivers/media/i2c/ov7251.c
> index 0e7be15bc20a..40c207d1d7af 100644
> --- a/drivers/media/i2c/ov7251.c
> +++ b/drivers/media/i2c/ov7251.c
> @@ -934,6 +934,7 @@ static int ov7251_set_power_on(struct device *dev)
>  					ARRAY_SIZE(ov7251_global_init_setting));
>  	if (ret < 0) {
>  		dev_err(ov7251->dev, "error during global init\n");
> +		clk_disable_unprepare(ov7251->xclk);
>  		ov7251_regulators_disable(ov7251);
>  		return ret;
>  	}